package com.android.delivery.util.permission;

import android.app.Activity;
import android.app.AppOpsManager;
import android.app.NotificationManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.net.Uri;
import android.os.Build;
import android.provider.Settings;

import androidx.annotation.RequiresApi;
import androidx.core.app.NotificationManagerCompat;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class NotificationsUtils {
    public static boolean areNotificationsEnabled(Context context) {
        NotificationManagerCompat.from(context).areNotificationsEnabled();
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            return true;
        }
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
            return isEnableV19(context);
        } else {
            return isEnableV26(context);
        }
    }


    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
    private static boolean isEnableV19(Context context) {
        final String CHECK_OP_NO_THROW = "checkOpNoThrow";
        final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";
        AppOpsManager mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
        ApplicationInfo appInfo = context.getApplicationInfo();
        String pkg = context.getApplicationContext().getPackageName();
        int uid = appInfo.uid;
        Class appOpsClass = null; /* Context.APP_OPS_MANAGER */
        try {
            appOpsClass = Class.forName(AppOpsManager.class.getName());
            Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE, String.class);
            Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
            int value = (int) opPostNotificationValue.get(Integer.class);
            return ((int) checkOpNoThrowMethod.invoke(mAppOps, value, uid, pkg) == AppOpsManager.MODE_ALLOWED);
        } catch (ClassNotFoundException e) {
        } catch (NoSuchMethodException e) {
        } catch (NoSuchFieldException e) {
        } catch (InvocationTargetException e) {
        } catch (IllegalAccessException e) {
        } catch (Exception e) {
        }
        return false;
    }


    private static boolean isEnableV26(Context context) {
        ApplicationInfo appInfo = context.getApplicationInfo();
        String pkg = context.getApplicationContext().getPackageName();
        int uid = appInfo.uid;
        try {
            NotificationManager notificationManager = (NotificationManager)
                    context.getSystemService(Context.NOTIFICATION_SERVICE);
            Method sServiceField = notificationManager.getClass().getDeclaredMethod("getService");
            sServiceField.setAccessible(true);
            Object sService = sServiceField.invoke(notificationManager);

            Method method = sService.getClass().getDeclaredMethod("areNotificationsEnabledForPackage"
                    , String.class, Integer.TYPE);
            method.setAccessible(true);
            return (boolean) method.invoke(sService, pkg, uid);
        } catch (Exception e) {
            return true;
        }
    }

    public static void requestNotification(Activity context) {
        try {
            Intent localIntent = new Intent();
            localIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            //直接跳转到应用通知设置的代码：
            if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                localIntent.setAction(Settings.ACTION_APP_NOTIFICATION_SETTINGS);
                localIntent.putExtra(Settings.EXTRA_APP_PACKAGE, context.getPackageName());
                context.startActivity(localIntent);
                return;
            }
            if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                localIntent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");
                localIntent.putExtra("app_package", context.getPackageName());
                localIntent.putExtra("app_uid", context.getApplicationInfo().uid);
                context.startActivity(localIntent);
                return;
            }
            if (android.os.Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
                localIntent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                localIntent.addCategory(Intent.CATEGORY_DEFAULT);
                localIntent.setData(Uri.parse("package:" + context.getPackageName()));
                context.startActivity(localIntent);
                return;
            }

            //4.4以下没有从app跳转到应用通知设置页面的Action，可考虑跳转到应用详情页面,

            if (Build.VERSION.SDK_INT >= 9) {
                localIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
                localIntent.setData(Uri.fromParts("package", context.getPackageName(), null));
                context.startActivity(localIntent);
                return;
            }

            localIntent.setAction(Intent.ACTION_VIEW);
            localIntent.setClassName("com.android.settings", "com.android.setting.InstalledAppDetails");
            localIntent.putExtra("com.android.settings.ApplicationPkgName", context.getPackageName());


        } catch (Exception e) {
            e.printStackTrace();
            System.out.println(" cxx   pushPermission 有问题");
        }
    }
}